<?php

//折翼天使资源社区 提供 www.zheyitianshi.com
define('SERVICES_JSON_SLICE', 1);
define('SERVICES_JSON_IN_STR', 2);
define('SERVICES_JSON_IN_ARR', 3);
define('SERVICES_JSON_IN_OBJ', 4);
define('SERVICES_JSON_IN_CMT', 5);
define('SERVICES_JSON_LOOSE_TYPE', 16);
define('SERVICES_JSON_SUPPRESS_ERRORS', 32);
class Services_JSON
{
	function Services_JSON($use = 0)
	{
		$this->use = $use;
	}
	function utf162utf8($utf16)
	{
		if (function_exists('mb_convert_encoding')) {
			return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
		}
		$bytes = ord($utf16[0]) << 8 | ord($utf16[1]);
		switch (true) {
			case (127 & $bytes) == $bytes:
				return chr(127 & $bytes);
			case (2047 & $bytes) == $bytes:
				return chr(192 | $bytes >> 6 & 31) . chr(128 | $bytes & 63);
			case (65535 & $bytes) == $bytes:
				return chr(224 | $bytes >> 12 & 15) . chr(128 | $bytes >> 6 & 63) . chr(128 | $bytes & 63);
		}
		return '';
	}
	function utf82utf16($utf8)
	{
		if (function_exists('mb_convert_encoding')) {
			return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
		}
		switch (strlen($utf8)) {
			case 1:
				return $utf8;
			case 2:
				return chr(7 & ord($utf8[0]) >> 2) . chr(192 & ord($utf8[0]) << 6 | 63 & ord($utf8[1]));
			case 3:
				return chr(240 & ord($utf8[0]) << 4 | 15 & ord($utf8[1]) >> 2) . chr(192 & ord($utf8[1]) << 6 | 127 & ord($utf8[2]));
		}
		return '';
	}
	function encode($var)
	{
		switch (gettype($var)) {
			case 'boolean':
				return $var ? 'true' : 'false';
			case 'NULL':
				return 'null';
			case 'integer':
				return (int) $var;
			case 'double':
			case 'float':
				return (double) $var;
			case 'string':
				$ascii = '';
				$strlen_var = strlen($var);
				for ($c = 0; $c < $strlen_var; ++$c) {
					$ord_var_c = ord($var[$c]);
					switch (true) {
						case $ord_var_c == 8:
							$ascii .= '\b';
							break;
						case $ord_var_c == 9:
							$ascii .= '\t';
							break;
						case $ord_var_c == 10:
							$ascii .= '\n';
							break;
						case $ord_var_c == 12:
							$ascii .= '\f';
							break;
						case $ord_var_c == 13:
							$ascii .= '\r';
							break;
						case $ord_var_c == 34:
						case $ord_var_c == 47:
						case $ord_var_c == 92:
							$ascii .= '\\' . $var[$c];
							break;
						case $ord_var_c >= 32 && $ord_var_c <= 127:
							$ascii .= $var[$c];
							break;
						case ($ord_var_c & 224) == 192:
							$char = pack('C*', $ord_var_c, ord($var[$c + 1]));
							$c += 1;
							$utf16 = $this->utf82utf16($char);
							$ascii .= sprintf('\u%04s', bin2hex($utf16));
							break;
						case ($ord_var_c & 240) == 224:
							$char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]));
							$c += 2;
							$utf16 = $this->utf82utf16($char);
							$ascii .= sprintf('\u%04s', bin2hex($utf16));
							break;
						case ($ord_var_c & 248) == 240:
							$char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3]));
							$c += 3;
							$utf16 = $this->utf82utf16($char);
							$ascii .= sprintf('\u%04s', bin2hex($utf16));
							break;
						case ($ord_var_c & 252) == 248:
							$char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3]), ord($var[$c + 4]));
							$c += 4;
							$utf16 = $this->utf82utf16($char);
							$ascii .= sprintf('\u%04s', bin2hex($utf16));
							break;
						case ($ord_var_c & 254) == 252:
							$char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3]), ord($var[$c + 4]), ord($var[$c + 5]));
							$c += 5;
							$utf16 = $this->utf82utf16($char);
							$ascii .= sprintf('\u%04s', bin2hex($utf16));
							break;
					}
				}
				return '"' . $ascii . '"';
			case 'array':
				if (is_array($var) && count($var) && array_keys($var) !== range(0, sizeof($var) - 1)) {
					$properties = array_map(array($this, 'name_value'), array_keys($var), array_values($var));
					foreach ($properties as $property) {
						if (Services_JSON::isError($property)) {
							return $property;
						}
					}
					return '{' . join(',', $properties) . '}';
				}
				$elements = array_map(array($this, 'encode'), $var);
				foreach ($elements as $element) {
					if (Services_JSON::isError($element)) {
						return $element;
					}
				}
				return '[' . join(',', $elements) . ']';
			case 'object':
				$vars = get_object_vars($var);
				$properties = array_map(array($this, 'name_value'), array_keys($vars), array_values($vars));
				foreach ($properties as $property) {
					if (Services_JSON::isError($property)) {
						return $property;
					}
				}
				return '{' . join(',', $properties) . '}';
			default:
				return $this->use & SERVICES_JSON_SUPPRESS_ERRORS ? 'null' : new Services_JSON_Error(gettype($var) . " can not be encoded as JSON string");
		}
	}
	function name_value($name, $value)
	{
		$encoded_value = $this->encode($value);
		if (Services_JSON::isError($encoded_value)) {
			return $encoded_value;
		}
		return $this->encode(strval($name)) . ':' . $encoded_value;
	}
	function reduce_string($str)
	{
		$str = preg_replace(array('#^\s*//(.+)$#m', '#^\s*/\*(.+)\*/#Us', '#/\*(.+)\*/\s*$#Us'), '', $str);
		return trim($str);
	}
	function decode($str)
	{
		$str = $this->reduce_string($str);
		switch (strtolower($str)) {
			case 'true':
				return true;
			case 'false':
				return false;
			case 'null':
				return null;
			default:
				$m = array();
				if (is_numeric($str)) {
					return (double) $str == (int) $str ? (int) $str : (double) $str;
				} elseif (preg_match('/^("|\').*(\\1)$/s', $str, $m) && $m[1] == $m[2]) {
					$delim = substr($str, 0, 1);
					$chrs = substr($str, 1, -1);
					$utf8 = '';
					$strlen_chrs = strlen($chrs);
					for ($c = 0; $c < $strlen_chrs; ++$c) {
						$substr_chrs_c_2 = substr($chrs, $c, 2);
						$ord_chrs_c = ord($chrs[$c]);
						switch (true) {
							case $substr_chrs_c_2 == '\b':
								$utf8 .= chr(8);
								++$c;
								break;
							case $substr_chrs_c_2 == '\t':
								$utf8 .= chr(9);
								++$c;
								break;
							case $substr_chrs_c_2 == '\n':
								$utf8 .= chr(10);
								++$c;
								break;
							case $substr_chrs_c_2 == '\f':
								$utf8 .= chr(12);
								++$c;
								break;
							case $substr_chrs_c_2 == '\r':
								$utf8 .= chr(13);
								++$c;
								break;
							case $substr_chrs_c_2 == '\\"':
							case $substr_chrs_c_2 == '\\\'':
							case $substr_chrs_c_2 == '\\\\':
							case $substr_chrs_c_2 == '\\/':
								if ($delim == '"' && $substr_chrs_c_2 != '\\\'' || $delim == "'" && $substr_chrs_c_2 != '\\"') {
									$utf8 .= $chrs[++$c];
								}
								break;
							case preg_match('/\\\\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
								$utf16 = chr(hexdec(substr($chrs, $c + 2, 2))) . chr(hexdec(substr($chrs, $c + 4, 2)));
								$utf8 .= $this->utf162utf8($utf16);
								$c += 5;
								break;
							case $ord_chrs_c >= 32 && $ord_chrs_c <= 127:
								$utf8 .= $chrs[$c];
								break;
							case ($ord_chrs_c & 224) == 192:
								$utf8 .= substr($chrs, $c, 2);
								++$c;
								break;
							case ($ord_chrs_c & 240) == 224:
								$utf8 .= substr($chrs, $c, 3);
								$c += 2;
								break;
							case ($ord_chrs_c & 248) == 240:
								$utf8 .= substr($chrs, $c, 4);
								$c += 3;
								break;
							case ($ord_chrs_c & 252) == 248:
								$utf8 .= substr($chrs, $c, 5);
								$c += 4;
								break;
							case ($ord_chrs_c & 254) == 252:
								$utf8 .= substr($chrs, $c, 6);
								$c += 5;
								break;
						}
					}
					return $utf8;
				} elseif (preg_match('/^\\[.*\\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
					if ($str[0] == '[') {
						$stk = array(SERVICES_JSON_IN_ARR);
						$arr = array();
					} else {
						if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
							$stk = array(SERVICES_JSON_IN_OBJ);
							$obj = array();
						} else {
							$stk = array(SERVICES_JSON_IN_OBJ);
							$obj = new stdClass();
						}
					}
					array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => 0, 'delim' => false));
					$chrs = substr($str, 1, -1);
					$chrs = $this->reduce_string($chrs);
					if ($chrs == '') {
						if (reset($stk) == SERVICES_JSON_IN_ARR) {
							return $arr;
						} else {
							return $obj;
						}
					}
					$strlen_chrs = strlen($chrs);
					for ($c = 0; $c <= $strlen_chrs; ++$c) {
						$top = end($stk);
						$substr_chrs_c_2 = substr($chrs, $c, 2);
						if ($c == $strlen_chrs || $chrs[$c] == ',' && $top['what'] == SERVICES_JSON_SLICE) {
							$slice = substr($chrs, $top['where'], $c - $top['where']);
							array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => $c + 1, 'delim' => false));
							if (reset($stk) == SERVICES_JSON_IN_ARR) {
								array_push($arr, $this->decode($slice));
							} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
								$parts = array();
								if (preg_match('/^\\s*(["\'].*[^\\\\\\]["\'])\\s*:\\s*(\\S.*),?$/Uis', $slice, $parts)) {
									$key = $this->decode($parts[1]);
									$val = $this->decode($parts[2]);
									if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
										$obj[$key] = $val;
									} else {
										$obj->{$key} = $val;
									}
								} elseif (preg_match('/^\\s*(\\w+)\\s*:\\s*(\\S.*),?$/Uis', $slice, $parts)) {
									$key = $parts[1];
									$val = $this->decode($parts[2]);
									if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
										$obj[$key] = $val;
									} else {
										$obj->{$key} = $val;
									}
								}
							}
						} elseif (($chrs[$c] == '"' || $chrs[$c] == "'") && $top['what'] != SERVICES_JSON_IN_STR) {
							array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs[$c]));
						} elseif ($chrs[$c] == $top['delim'] && $top['what'] == SERVICES_JSON_IN_STR && ($chrs[$c - 1] != '\\' || $chrs[$c - 1] == '\\' && $chrs[$c - 2] == '\\')) {
							array_pop($stk);
						} elseif ($chrs[$c] == '[' && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
							array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
						} elseif ($chrs[$c] == ']' && $top['what'] == SERVICES_JSON_IN_ARR) {
							array_pop($stk);
						} elseif ($chrs[$c] == '{' && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
							array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
						} elseif ($chrs[$c] == '}' && $top['what'] == SERVICES_JSON_IN_OBJ) {
							array_pop($stk);
						} elseif ($substr_chrs_c_2 == '/*' && in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
							array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
							$c++;
						} elseif ($substr_chrs_c_2 == '*/' && $top['what'] == SERVICES_JSON_IN_CMT) {
							array_pop($stk);
							$c++;
							for ($i = $top['where']; $i <= $c; ++$i) {
								$chrs = substr_replace($chrs, ' ', $i, 1);
							}
						}
					}
					if (reset($stk) == SERVICES_JSON_IN_ARR) {
						return $arr;
					} elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
						return $obj;
					}
				}
		}
	}
	function isError($data, $code = null)
	{
		if (class_exists('pear')) {
			return PEAR::isError($data, $code);
		} elseif (is_object($data) && (get_class($data) == 'services_json_error' || is_subclass_of($data, 'services_json_error'))) {
			return true;
		}
		return false;
	}
}
if (class_exists('PEAR_Error')) {
	class Services_JSON_Error extends PEAR_Error
	{
		function Services_JSON_Error($message = 'unknown error', $code = null, $mode = null, $options = null, $userinfo = null)
		{
			parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
		}
	}
} else {
	class Services_JSON_Error
	{
		function Services_JSON_Error($message = 'unknown error', $code = null, $mode = null, $options = null, $userinfo = null)
		{
		}
	}
}